2 ANSI 規定的第一類聽力檢查儀(Type I audiometer)對於氣導(AC:air conduction)及骨導(BC:
bone conduction)之頻率測量範圍及最大輸出音強為?
(A)AC:125 to 8000 Hz;BC:250 to 6000 Hz;AC:120 dB HL;BC:70 dB HL
(B)AC:125 to 16000 Hz;BC:250 to 4000 Hz;AC:110 dB HL;BC:70 dB HL
(C)AC:125 to 8000 Hz;BC:250 to 4000 Hz;AC:110 dB HL;BC:60 dB HL
(D)AC:125 to 16000 Hz;BC:250 to 6000 Hz;AC:120 dB HL;BC:70 dB HL